Brake-beam.



PATENTED AUG. 13, 1907.

N. H. DAVIS.

BRAKE BEAM.

i APPLICATION FILED AUG; 6. 1906.

45 bers.

50 lindrir-al pn.

NATHAN H. DAVIS, OF PHILADELPHIA, PENNSYLVANIA.

BRAKE-BEAM.

No. 863, l 58.

Specification of Letters Patent.

Patented Aug. 18, 1907.

Application filed August 6,1906. Serial No. 329,494*- particularly' to brake beams of the truss type and has for its object to improve the construction of the struts employed in such beams and also to improve the means for supporting -the brake heads on the beam.

The various features of novelty which characterize my invention are pointed out with particularity in the claims annexed to and forming a part of this specification. .For a .better understanding of my invention, however, and the advantages possessed by it, reference may be had to the accompanying drawings and descriptive matter in which I have illustratedand described one of the forms in which it may be embodied.

Oi the drawings, Figure 1 is a plan view of a complete brake beam. Fig. 2 is an end elevation on a largerscale of the beam shown in Fig l. Fig. 3 is a perspective View showing the strut and aiportion oi the beam. Fig. 4 is a section on the line dk4 oi Fig l and Fig. 5 is a section'on the line 5-'5 of Fig 2. Fig. 6 is a section on the line 6 6 oi Fig. 5.

In the drawings, I have shown my invention cmployed in conjunction with a beam proper of the type shown in my Patent ($83,729, granted October l, 1901, in which the beam A. is formed from a flanged bar, cruciform in cross-section, one flange B, which is practically round in cross-section boing separated from the body oi the bar to'iorm ythe tension member oitlie truss beam and the othertliree ilangcs (Y, C2, and (1 forming tho compression member C oi the beam. The ends A oi the beam retaining the original shape oi the bar from which the bea-1n is inade. i

On each end of the beam I secure an end member D formed with a cruciiorm passage D to receive the end oi the beam. The. end members D may be secured in place by proportioniug the parts so that a driving lit is obtained lwtwcon the ends oi the beam and the mein- ()nc more rivet D1 may be employed as shown in'Fig ti to secure each end member in place. When `tho rivets are, employed the members l) may be cut awa-y as shown at D" in Fig. ti. "he outer surface oi the body oi each member l) is shaped to enter the cyjc 1"/ formed in tho corresponding brake head E. lbe inner end ol each brake headwliich is tlius "wivcled on tb(l end ol' nach brake member Il means such as ay coior pin l)T prevents accidental rcmoval of the brake head. As shown in Fig. 5 the end members are preferably made with an end wall D8 closing the outer ends oi the sloisD.

The strut extending between the tension and compression inembcrs transversely to the length oi the beam comprises a main strut member F having an integral jaw F and a cooperating Inovabl e jaw F2 secured in place by a bolt or rivet F3 for securing the strut mem- 'ber to thecomprcssion member ,of the beam. The body of the member F is formed with a sldt Fit to receive a brake lever. The walls at the side of the slot F 4 are each provided with supporting ears FG. The

' iront ends of the ortions F are connected b anintcgral shoulder 'or bridge portion ,FT which may have its back sideparallel to the top and bottom sides as shown. This end of the strut member is formed with a curved scat F8 to receive the inner surface oi the tension member B ofthe beam.

A U-shaped member G having its inner surface fitted to bear against the bridge F7 is loosely secured in place by a pin G2 extending between the strut parts F5. The legs of the member G are provided with eyes G receiving pins G4 wht' o also pass through eyes Hf formed in a yoke member H. The yoke member-'H comprises two side members H2 which bear against opposite sides oi the member G and are integrally connected by a bridge member H3. The members H3 are provided with eyes H4 by which a connection may be made to brake operai ing mechanism. The member H is provided with a curved seat to receive theA outer surface of the tension member of the beam.

It will be observed that in the construction just described the strut member. F is anchored securely to the tension member or the bf-am by means oi the members G and Il. and tliut the latter members i'orm brake actuating mechanism which applies force to tho beam through thi.l somewhat massive bridge member F7 and thc strut of which it forms a pari.. The pin G2 is employed simply to hold the parts in place and as a safety' connection between the strut and the members G and Ii. The means employed for swivcling the brake heads on the brake beam is simple in construction, easily assembled and highly sat islaclory and reliable in operation when employed on a brake beam of the character disclosed.

Certain features ol my invention shown and dr scribed but not claimed herein are claimed in niy copending application Ser. No. 329,493 tiled ol even date i herewith.

tion of its body cylindrical and provided with an axial exyoke at the outer side of theftension m fiension,4 a brake head swiveled on said cylindrical body portion and means secured to said re'ducedpprtion ofsaid member for. preventing axial displacement of said brake head. l

2.5111 combination, a brake benin comprising' tensi'onand"V compression members. a strut provided at -one end withl split clamping jawsy for engagingjthe compression 'member of tbe beam and formed at the other Aend with a socket to receive the inner edge 'of'the tension membervan'd also.

provided nith a. shoulder extending substantially parallel to the length of the beamand brakefactuating. mechanism' surrounding said shoulder and said tension member."

3. In combination, a brake beam comprising tension'-and' compression members, a strut connected at one end to tlfe compression member of the beam.*providedl at the other end with l:1- socket to receive the inner edge '.of the tension member. and having a shoulder extending parallel to the.

general directionof the beam. a Vill' shaped'member stradtiling said shoulder and'vsnid tension .member with its yoke engaging said shoulder. and a loose connection between said U shaped member and strut. 1. In combination, a brake-beam comprising tension and reversely placedwith respect `to ,f thgi iirsnsaid U shaped said .tension and' compression membersandprovided with a portion adjacent the tension member 'extending-.parallel tlicstrut to the .C ompreslsiln member, al! s haped member straddling said strut-portion and 'the tension `memberand bearing* againstfsnid strut portion with its yoke, a second U shaped. member Vstraddling said tension. member with its 'einher and. having' its legs secured to the legs oi the r'st mentioned U shaped member. A A

6. In combination, a brake beamco-mprising tension and compression.members.. a strut member extending, between said, tension and compression'members and formed with slot 'intermediate its ends, a U shaped member having its lyoke located in said slot and-its legs extending atopposite sides of said tension member. l'

7.- In combination, a brake beam comprising tension and compression members, a strut member extending between said tension and ,compression members and formed with a slot intermediate its ends, -a U shaped member having its yoke located in .said slot'and its legs extending at opposite sides of said tension member, anda second U shaped member reversely placed withl respect to the lfirst and having its legs -secured to.t`he,1egs' thereof, whereby vsaid U shaped members serveA to lock the tension 8. In coxnbination, a brake fbeam having tension-and member-and the corre-l spending end of the strut together', l

compre sion members, a strut having one cndsecur'cd to the compression member and theother end engaging the tension member and provided wifh'the shoulder F7 having its top and bottom sides substantially 'parallel to each otherl and its-back side substantially transversefto the f. top and bottom sides and thev U shaped member G Ittedto straddle said shoulderfand bear against the rear side thereof. 4

S). In 'combinatio'nja brake beam comprising tension and compression meinbe'rs, a strut extending; between .said

Amembers-and provided `with a shoulder extending substantially parallel Vto th'e length of lthe beam and Ioca'tcd betweensaid members. and brake .actuating mechanism straddlingsaid'tension' member and engaging saidA shoulder.

1 0. In combination, a brake-beam comprising tension and compression members,v a strut secured at' one end to thecompression member of-thebeam and` .formed at the other vend with a socket-iu) receive the inner edge of the tension member,A and also provided with a shoulder extending substantially parallel to the length of the beam. and 4brake actuating mechanism surrounding said shoulder and said tension member.`

NATHAN H. DAVIS.. Witnesses:

ARNOLD KA'rz, i SQSTEWART. 

